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| Mirrors > Home > MPE Home > Th. List > Mathboxes > bj-1uplex | Structured version Visualization version GIF version | ||
| Description: A monuple is a set if and only if its coordinates are sets. (Contributed by BJ, 6-Apr-2019.) |
| Ref | Expression |
|---|---|
| bj-1uplex | ⊢ (⦅𝐴⦆ ∈ V ↔ 𝐴 ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | bj-pr11val 37502 | . . 3 ⊢ pr1 ⦅𝐴⦆ = 𝐴 | |
| 2 | bj-pr1ex 37503 | . . 3 ⊢ (⦅𝐴⦆ ∈ V → pr1 ⦅𝐴⦆ ∈ V) | |
| 3 | 1, 2 | eqeltrrid 2870 | . 2 ⊢ (⦅𝐴⦆ ∈ V → 𝐴 ∈ V) |
| 4 | df-bj-1upl 37495 | . . 3 ⊢ ⦅𝐴⦆ = ({∅} × tag 𝐴) | |
| 5 | p0ex 5346 | . . . 4 ⊢ {∅} ∈ V | |
| 6 | bj-xtagex 37486 | . . . 4 ⊢ ({∅} ∈ V → (𝐴 ∈ V → ({∅} × tag 𝐴) ∈ V)) | |
| 7 | 5, 6 | ax-mp 5 | . . 3 ⊢ (𝐴 ∈ V → ({∅} × tag 𝐴) ∈ V) |
| 8 | 4, 7 | eqeltrid 2869 | . 2 ⊢ (𝐴 ∈ V → ⦅𝐴⦆ ∈ V) |
| 9 | 3, 8 | impbii 212 | 1 ⊢ (⦅𝐴⦆ ∈ V ↔ 𝐴 ∈ V) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 ∈ wcel 2145 Vcvv 3457 ∅c0 4288 {csn 4585 × cxp 5650 tag bj-ctag 37471 ⦅bj-c1upl 37494 pr1 bj-cpr1 37497 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-rep 5232 ax-sep 5251 ax-nul 5261 ax-pow 5327 ax-pr 5395 ax-un 7722 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3080 df-rex 3090 df-rab 3418 df-v 3459 df-sbc 3748 df-csb 3856 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4869 df-br 5106 df-opab 5168 df-xp 5658 df-rel 5659 df-cnv 5660 df-dm 5662 df-rn 5663 df-res 5664 df-ima 5665 df-bj-sngl 37463 df-bj-tag 37472 df-bj-proj 37488 df-bj-1upl 37495 df-bj-pr1 37498 |
| This theorem is referenced by: bj-2uplex 37519 |
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